*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;
    background-image: url(../image/background.jpg);
    background-repeat: no-repeat;
    background-position: center center;
    background-size: cover;
}
.nav img{
    width: 40px;
    height: 40px;
    border-radius: 20px;
    margin-left: 30px;
    margin-right: 10px;
}

.nav{
   
    width: 100%;
    height: 50px;
    background-color: rgba(50, 50, 50, 0.4);
    color: rgb(255, 255, 255);
    display: flex;
    align-items: center;
}
.nav .spacer{
    width: 70%;
}
.nav a{
    color: rgb(255, 255, 255);
    text-decoration: none;
    padding: 0 10px;
}
.container{
    
    justify-content: space-between;
    width: 1000px;
    margin: 0 auto;
    height: calc(100% - 50px);
    display: flex;
}
.left{
    width: 295px;
    height: 100%;
    
    
}
.right{
    width: 700px;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.8);
    overflow: auto;
}
.card{
    background-color: rgba(255, 255, 255, 0.8);
    border-radius: 10px;
    padding: 30px;
   
}
.card img{
    width: 140px;
    height: 140px;
    border-radius: 70px;
    margin-left: 50px;
}
.card h3{
    text-align: center;
    padding: 10px;
}
.card a{
    display: block;
    color: rgb(185, 178, 178);
    text-decoration: none;
    padding: 0 10px;
    text-align: center;
}
.content{
    display: flex;
    padding: 5px;
    justify-content: space-around;
}